python.rb: better error if easy_install isn't installed
python.rb: better error if easy_install isn't installed

paul-krohn/fpm,doghrim/fpm,josephfrazier/fpm,rbramwell/fpm,dischord01/fpm,rbramwell/fpm,paul-krohn/fpm,johnbintz/fpm,Tapjoy/fpm,doghrim/fpm,dischord01/fpm,wyaeld/fpm,fetep/fpm,djhaskin987/merge-demo,pskrz/fpm,doghrim/fpm,virtkick/fpm,Tapjoy/fpm,godp1301/fpm,josephfrazier/fpm,virtkick/fpm,cturra/fpm,joseph-onsip/fpm,snailwalker/fpm,sideci-sample/sideci-sample-fpm,cturra/fpm,johnbintz/fpm,linearregression/fpm,sideci-sample/sideci-sample-fpm,jerizm/fpm,wyaeld/fpm,mzaccari/fpm,snailwalker/fpm,mildred/fpm,Tapjoy/fpm,elvido/fpm,rbramwell/fpm,mildred/fpm,linearregression/fpm,jerizm/fpm,dischord01/fpm,elvido/fpm,doghrim/fpm,cturra/fpm,mildred/fpm,rbramwell/fpm,vi4m/fpm,joseph-onsip/fpm,fetep/fpm,wyaeld/fpm,tjyang/fpm,gearmover/fpm,gearmover/fpm,mzaccari/fpm,joseph-onsip/fpm,schatt/fpm,snailwalker/fpm,schatt/fpm,linearregression/fpm,virtkick/fpm,djhaskin987/merge-demo,linearregression/fpm,gearmover/fpm,djhaskin987/merge-demo,jedisct1/fpm,hlawrenz/fpm,hlawrenz/fpm,pskrz/fpm,mildred/fpm,vi4m/fpm,mzaccari/fpm,hlawrenz/fpm,dischord01/fpm,godp1301/fpm,gearmover/fpm,josephfrazier/fpm,cturra/fpm,fetep/fpm,vi4m/fpm,tjyang/fpm,jedisct1/fpm,schatt/fpm,jedisct1/fpm,jerizm/fpm,elvido/fpm,hlawrenz/fpm,virtkick/fpm,paul-krohn/fpm,wyaeld/fpm,jerizm/fpm,snailwalker/fpm,schatt/fpm,Tapjoy/fpm,pskrz/fpm,elvido/fpm,godp1301/fpm,josephfrazier/fpm,mzaccari/fpm,joseph-onsip/fpm,tjyang/fpm,tjyang/fpm,vi4m/fpm,fetep/fpm,paul-krohn/fpm,sideci-sample/sideci-sample-fpm,pskrz/fpm,godp1301/fpm,johnbintz/fpm